CN111267339B - Method for adjusting height of nozzle of 3D printer - Google Patents
Method for adjusting height of nozzle of 3D printer Download PDFInfo
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- CN111267339B CN111267339B CN202010127243.7A CN202010127243A CN111267339B CN 111267339 B CN111267339 B CN 111267339B CN 202010127243 A CN202010127243 A CN 202010127243A CN 111267339 B CN111267339 B CN 111267339B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Ink Jet (AREA)
Abstract
The method takes the first completely twisted line as a reference, and adjusts the height of the 3D printer nozzle by using the calibration formula, so that the method is simple to operate, high in efficiency and accurate in height adjustment; and subjective factors existing when the best line is selected to be printed can be eliminated, so that the adjustment result is more objective, and the calibration result is consistent.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a method for adjusting the height of a nozzle of a 3D printer.
Background
3D printing, also known as additive manufacturing, belongs to one of the rapid prototyping technologies. The technology is that the hot melt type material wire is extruded from a nozzle after being heated and melted, is deposited on a printing working platform or a previous layer of solidified material, starts to be solidified and molded when the temperature is lower than the solidification temperature of the material wire, is finally printed into an entity, and is widely applied to industries of artistic originality, education, jewelry, medical treatment and the like.
In the actual printing process, a user needs to adjust the nozzle to a proper height according to the best line to be printed; the best line is selected, the influence of subjective factors exists, the adjustment of the height of the nozzle is not accurate, the adjustment, the printing and the readjustment are needed repeatedly, the process is complicated, and time and energy are consumed.
Disclosure of Invention
The invention aims to provide a method for adjusting the height of a nozzle of a 3D printer, which does not need manual adjustment of the position of double nozzles and is simple to operate.
In order to achieve the purpose, the invention provides the following scheme:
a method of adjusting a 3D printer nozzle height, the method comprising:
determining an initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered by using a feeler gauge;
adjusting the height of the nozzle upwards or downwards on the basis of the initial height difference value to obtain the printing height of a first line, and printing the first line;
judging whether the first line is a completely twisted line or not; if so, adjusting the printing height of the first line downwards, reprinting the first line, and returning to the step of judging whether the first line is a completely distorted line; if not, the following processing is carried out;
adjusting the height of the spray head for N times according to the set stepping value, and printing lines with corresponding heights;
judging whether the lines with the corresponding heights have completely twisted lines or not; if not, the printing height of the first line is adjusted, the first line is printed again, the height of the spray head is adjusted for N times according to the set stepping value, and the line with the corresponding height is printed; if so, acquiring the height corresponding to the first completely twisted line, and performing the following processing;
calculating the height difference of the nozzle from the bottom of the probe according to Offset0-Zstart- (Zstep Index) + Z0+ Z1, and adjusting the height of the nozzle to make the height difference of the nozzle from the bottom of the probe be Offset; wherein Offset is a height difference between the nozzle and the bottom of the probe when the probe is triggered, Offset0 is an initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered, Zstart is a printing height of the first line, Zstep is the step value, Index is a line sequence number of the first fully twisted line minus 1, Z0 is a height from the printing platform for an optimal line to be printed, and Z1 is a height difference between the first fully twisted line and the optimal line to be printed.
Optionally, before the determining an initial value of a height difference between the nozzle and the bottom of the probe when the probe is triggered by using the feeler gauge, the method further includes: the nozzle is moved to just above the hot bed.
Optionally, the feeler gauge is a 0.3mm feeler gauge.
Optionally, the width of the line of the respective height is equal to the width of the first line.
Optionally, the width of the first line is 0.8 mm.
Optionally, the mouth diameter of the nozzle is 0.4 mm.
Optionally, the printing height of the first line is adjusted downward to be 0.5 mm.
Optionally, the print height of the first line is adjusted up to 0.5 mm.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the height of the nozzle of the 3D printer is adjusted by using the first completely twisted line as a reference and using a calibration formula, so that the operation is simple, and the height is accurately adjusted; and subjective factors existing when the best line is selected to be printed can be eliminated, so that the adjustment result is more objective, and the calibration result is consistent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for adjusting the height of a nozzle of a 3D printer according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a method for adjusting the height of a nozzle of a 3D printer, which can simply and quickly adjust the nozzle to a proper height.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
A method of adjusting a 3D printer nozzle height, the method comprising:
step 101: and determining an initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered by using the feeler gauge.
Step 102: and adjusting the height of the nozzle upwards or downwards on the basis of the initial height difference value to obtain the printing height of the first line, and printing the first line.
Step 103: judging whether the first line is a completely twisted line or not; wherein the curvature of any point on the curve is greater than 0; if so, adjusting the printing height of the first line downwards, reprinting the first line, and returning to the step of judging whether the first line is a completely distorted line; if not, the following processing is performed.
Step 104: and adjusting the height of the spray head for N times according to the set stepping value, and printing a line with the corresponding height.
Step 105: judging whether the lines with the corresponding heights have completely twisted lines or not; if not, the printing height of the first line is adjusted upwards, the first line is printed again, and the step 104 is returned to; if so, acquiring the height corresponding to the first completely twisted line, and performing the following processing.
Step 106: calculating the height difference of the nozzle from the bottom of the probe according to Offset0-Zstart- (Zstep Index) + Z0+ Z1, and adjusting the height of the nozzle to make the height difference of the nozzle from the bottom of the probe be Offset; wherein Offset is a height difference between the nozzle and the bottom of the probe when the probe is triggered, Offset0 is an initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered, Zstart is a printing height of the first line, Zstep is the step value, Index is a line sequence number of the first fully twisted line minus 1, Z0 is a height from the printing platform for an optimal line to be printed, and Z1 is a height difference between the first fully twisted line and the optimal line to be printed.
In order to improve the accuracy of the nozzle height adjustment result, in the implementation process, the nozzle is moved to the position right above the hot bed, and the nozzle is adjusted. The central region of the hot bed is considered to be the flattest region because the magnets of the hot bed are distributed in the central region with the strongest adsorption force, and the middle point of the hot bed is selected as the reference point for measuring the nozzle, so that the precision of the adjustment result can be improved.
The initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered is determined through the 0.3mm feeler gauge, so that the height difference between the nozzle and the bottom of the probe can be measured more quickly.
The invention sets N to 15, i.e. 16 lines are printed, starting from low to high. The z-axis direction step is Zstep, i.e., each line is printed at a higher height Zstep m than the previous line. And to ensure that the width of the first line is equal to the width of the line at the corresponding height, the orifice diameter of the nozzle of the present invention is selected to be 0.4mm and the width of the printed line is set to be 0.8 mm.
The preferred printing height of the first line is adjusted down and up by 0.5 mm.
The invention realizes the technical effects that:
the first line of the invention is printed from the height of Zstart, which is an empirical value that has undergone a number of tests and is printed from this height to enable a more rapid measurement of the accurate value.
More importantly, the method selects the completely distorted line as the reference, not only shields the half-distorted line caused by uneven platform, but also abandons selecting the best line to print and selects the first completely distorted line, thereby preventing the user from being incapable of quantitatively judging the best line to print and shielding the subjective factors of people.
Through the calibration method, the height difference of the nozzle from the bottom of the probe can be accurately measured when the probe is triggered, and the error range is +/-0.025 mm.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A method for adjusting the height of a nozzle of a 3D printer is characterized by comprising the following steps:
determining an initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered by using a feeler gauge;
adjusting the height of the nozzle upwards or downwards on the basis of the initial height difference value to obtain the printing height of a first line, and printing the first line;
judging whether the first line is a completely twisted line or not; if so, adjusting the printing height of the first line downwards, reprinting the first line, and returning to the step of judging whether the first line is a completely distorted line; if not, the following processing is carried out;
adjusting the height of the nozzle according to the set stepping value N times, and printing a line with the corresponding height;
judging whether the lines with the corresponding heights have completely twisted lines or not; if not, the printing height of the first line is adjusted, the first line is printed again, the height of the nozzle is adjusted for N times according to the set stepping value, and the line with the corresponding height is printed; if so, acquiring the height corresponding to the first completely twisted line, and performing the following processing;
calculating the height difference of the nozzle from the bottom of the probe according to Offset0-Zstart- (Zstep Index) + Z0+ Z1, and adjusting the height of the nozzle to make the height difference of the nozzle from the bottom of the probe be Offset; wherein Offset is a height difference between the nozzle and the bottom of the probe when the probe is triggered, Offset0 is an initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered, Zstart is a printing height of the first line, Zstep is the step value, Index is a line sequence number of the first fully twisted line minus 1, Z0 is a height from the printing platform for an optimal line to be printed, and Z1 is a height difference between the first fully twisted line and the optimal line to be printed.
2. The method for adjusting the height of the nozzle of the 3D printer according to claim 1, wherein before the determining the initial value of the height difference between the nozzle and the bottom of the probe when the probe is triggered by the feeler gauge, the method further comprises: the nozzle is moved to just above the hot bed.
3. The method for adjusting the height of a nozzle of a 3D printer according to claim 1, wherein the feeler is a 0.3mm feeler.
4. The method of adjusting the height of a nozzle of a 3D printer according to claim 1, wherein the width of the line of the respective height is equal to the width of the first line.
5. The method of adjusting the height of a nozzle of a 3D printer according to claim 4, wherein the width of the first line is 0.8 mm.
6. The method for adjusting the height of the nozzle of the 3D printer according to claim 1, wherein the diameter of the nozzle is 0.4 mm.
7. The method of adjusting the height of a nozzle of a 3D printer according to claim 1, wherein the printing height of the first line is adjusted downward to be 0.5 mm.
8. The method of adjusting the height of a nozzle of a 3D printer according to claim 3, wherein the printing height of the first line is adjusted up to 0.5 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010127243.7A CN111267339B (en) | 2020-02-28 | 2020-02-28 | Method for adjusting height of nozzle of 3D printer |
| US16/822,879 US11059218B1 (en) | 2020-02-28 | 2020-03-18 | Methods for adjusting height of a 3D printer nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010127243.7A CN111267339B (en) | 2020-02-28 | 2020-02-28 | Method for adjusting height of nozzle of 3D printer |
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| Publication Number | Publication Date |
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| CN111267339A CN111267339A (en) | 2020-06-12 |
| CN111267339B true CN111267339B (en) | 2020-09-29 |
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| US (1) | US11059218B1 (en) |
| CN (1) | CN111267339B (en) |
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| CN114055780B (en) * | 2021-10-26 | 2023-05-30 | 深圳市纵维立方科技有限公司 | 3D printer automatic leveling method, storage medium and 3D printing equipment |
| CN114889123B (en) * | 2022-04-29 | 2024-04-12 | 深圳快造科技有限公司 | Dual-nozzle calibration method and printing device based on visual recognition |
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- 2020-03-18 US US16/822,879 patent/US11059218B1/en active Active
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| CN111267339A (en) | 2020-06-12 |
| US11059218B1 (en) | 2021-07-13 |
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